450221533 has 4 divisors (see below), whose sum is σ = 461202588. Its totient is φ = 439240480.

The previous prime is 450221531. The next prime is 450221537. The reversal of 450221533 is 335122054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65983129 + 384238404 = 8123^2 + 19602^2 .

It is a cyclic number.

It is not a de Polignac number, because 450221533 - 2¹ = 450221531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450221498 and 450221507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450221531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5490466 + ... + 5490547.

It is an arithmetic number, because the mean of its divisors is an integer number (115300647).

Almost surely, 2^450221533 is an apocalyptic number.

It is an amenable number.

450221533 is a deficient number, since it is larger than the sum of its proper divisors (10981055).

450221533 is a wasteful number, since it uses less digits than its factorization.

450221533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10981054.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 450221533 is about 21218.4243759993. The cubic root of 450221533 is about 766.4351620063.

Adding to 450221533 its reverse (335122054), we get a palindrome (785343587).

The spelling of 450221533 in words is "four hundred fifty million, two hundred twenty-one thousand, five hundred thirty-three".